[Bug 97450] [SKL] [regression] Random display flickering on Kernel 4.8 with dual-screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97450

--- Comment #28 from Paulo Zanoni <przanoni at gmail.com> ---
(In reply to rockorequin from comment #27)
> >> Created attachment 127264 [details] [review] [review] [review]
> >> Paulo's patch rebased vs 4.8.1 (a7fac751ddba)
> >
> > this is to apply memory workaround for skl
> 
> Thanks, I'm testing 4.8.1 now with that patch applied and also
> drm-i915-gen9-fix-DDB-partitioning-for-multi-screen-cases.patch applied.
> 
> > https://patchwork.freedesktop.org/patch/113642/ is not yet in v4.8.1.
> 
> I guessed that... From the log in git in drm-intel-nightly, it looks like
> that commit was made on October 4th, so I guess it must already be in my
> October 11th drm-intel-nightly kernel. Btw, I ran that kernel all day
> without any seeing any flickering issues, full-screen or otherwise.

Thanks a lot for testing the patches!

Based on your comments, I can see that:
- Patch "fix DDB partitioning" improves the situation but doesn't completely
solve the problem
- Patch "unconditionally apply memory WAs" helps solving the remaining issues.

Is that correct?

If yes, then I suppose we'll be able to close the bug once the second patch
lands on the tree.

If not, I do have to point that we have even more fixes on the mailing list,
but then we should probably setup a separate branch with all the fixes applied
so you'll only need to clone that branch instead of having to apply patches
manually and solve conflicts.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20161013/96868009/attachment.html>